Java做的Kaptcha图片验证码,集成在ssm框架中,此处用接口调用,图片验证码的配置用了set方法,这是Controller代码
//验证码
@RequestMapping("verifycode.do")
public void testcode(HttpServletRequest request,HttpServletResponse response) throws IOException {
//请求设置
response.setDateHeader("Expires",0);
response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");
response.addHeader("Cache-Control", "post-check=0, pre-check=0");
response.setHeader("Pragma", "no-cache");
response.setContentType("image/jpeg");
//kaptcha对象
/*
* <!-- 是否有边框 --><prop key="kaptcha.border">yes</prop>
<!-- 设置边框颜色 --><prop key="kaptcha.border.color">105,179,90</prop>
<!-- 获取中文 --><prop key="kaptcha.textproducer.impl">org.cric.util.ChineseText</prop>
<!-- 设置字体颜色 --><prop key="kaptcha.textproducer.font.color">black</prop>
<!-- 设置验证码宽度 --><prop key="kaptcha.image.width">50</prop>
<!-- 设置验证码高度 --><prop key="kaptcha.image.height">40</prop>
<!-- 设置字体大小 --><prop key="kaptcha.textproducer.font.size">30</prop>
<!-- 设置字体个数 --><prop key="kaptcha.textproducer.char.length">4</prop>
<!-- 验证码文本字符间距 -->
<prop key="kaptcha.textproducer.char.space">3</prop>
<!-- 设置字体样式 -->
<prop key="kaptcha.textproducer.font.names">宋体,楷体,微软雅黑</prop>
<prop key="kaptcha.noise.impl">com.google.code.kaptcha.impl.NoNoise</prop>
<prop key="kaptcha.textproducer.char.string">0123456789abcdefghijklmnopqrstuvwxyz</prop>
* */
DefaultKaptcha producer=new DefaultKaptcha();
//设置图片验证码相关参数
Properties properties=new Properties();
properties.setProperty("kaptcha.border", "no");
properties.setProperty("kaptcha.border.color", "105,179,90");
properties.setProperty("kaptcha.textproducer.font.color", "black");
properties.setProperty("kaptcha.image.width", "100");
properties.setProperty("kaptcha.image.height", "40");
properties.setProperty("kaptcha.session.key", "code");
properties.setProperty("kaptcha.textproducer.char.length", "4");
properties.setProperty("kaptcha.textproducer.font.size", "30");
properties.setProperty("kaptcha.textproducer.char.space", "5");
properties.setProperty("kaptcha.textproducer.font.names", "宋体,楷体,微软雅黑");
properties.setProperty("kaptcha.noise.impl", "com.google.code.kaptcha.impl.NoNoise");
properties.setProperty("kaptcha.textproducer.char.string","0123456789abcdefghijklmnopqrstuvwxyz");
Config config=new Config(properties);
producer.setConfig(config);
String capText = producer.createText();
request.getSession().setAttribute(Constants.KAPTCHA_SESSION_KEY, capText);
BufferedImage bi = producer.createImage(capText);
ServletOutputStream out = response.getOutputStream();
ImageIO.write(bi, "jpg", out);
try {
out.flush();
} finally {
out.close();
}
}
pom文件
<!--验证码-->
<dependency>
<groupId>com.github.penggle</groupId>
<artifactId>kaptcha</artifactId>
<version>2.3.2</version>
</dependency>